Molder s flask



E. PRIESS. MOLDERS FLASK.

Patented Mar. 31, 1885.v

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WITNESSES: (gmngmm.

- w@% a. ATTORNEY N Pzmrs. mmumo n h k Washington n c UNITED STATESPATENT UFFICEO EDVARD FRIESS, OF LOUISVILLE, KENTUCKY.

MOLDERS FLASK.

SPECQFICATSIQE'E forming part of Letters Patent No. 314,927, dated March31, 1885.

A Application filed January 12, 1885.' (No modehl T aZZ whom it mayconcern:

Be it known that I, EDVARD Fmnss, 0 Louisville, in the county ofJefferson and State of Kentucky, have invented certain new and usefulImprovements in Molders Flasks; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and useit, reference being had to the accompanying drawings, which form part ofthis specification.

My invention relates to an improvement in molders flasks; anditconsists,first, in the combination of a molders flask which is formedfrom a single piece of elastic material with an elastic adjustable framewhich is applied thereto, and which is also formed from'a single pieceof elastic material, so that it will conform to the movements of theflask; second, in the combination of the flask formed from a singlepiece of elastic material, and provided with suitable guides, with theadjustable frame provided with guiding-rods which pass through theguides; third, in the combination and arrangement of parts, which willbe more fully described hereinafter.

Figure 1 is a side elevation of a flask embodying my invention. Fig. 2is a vertical section of the same.

The two parts A B of the flask are each formed of a single piece ofsteel, wroughtiron, or any other suitable elastic material, the two endsof which material are detached from each other and left free to springapart whenever the latch or any other suitable fastening device, 0, isreleased. As here shown, a latch, O, is pivoted to one end of each partof the flask, and a corresponding latch, a, is secured to the oppositeends.

Applied to each part of the flask, either inside or out, is theadjustable sliding frame D, which can be moved by means of suitablehandles, 12, which are applied to its upper edge, so as to increase ordecrease the depth of the flask, according to the size of the patternwhich is to be used. These sliding adjustable frames are preferablymadeof the same width and depth of the flask itself, and will be raisedabove the parts of the flask to which they are applied for the purposeof enabling the flask to hold a greater or less quantity of sand, as maybe necessary.

To each sliding adjustable frame is attached a number of bolts, F, whichpass down through suitable eyes or guides, G, upon the flask, and whichhave nuts 0 d applied to their lower ends. The nuts 0 serve to limit thedistance the frames D shall be raised upward, and the jam-nuts d servetohold thenuts cin place. TheboltsFare rigidly secured to the ears orprojections e at their upper ends, which ears or projections are formedwith or secured to the frames D. These sliding adjustable frames arealso made elastic, so as to be compressed or closed with the, portion ofthe flask to which it is attached, so that it can also be loosened fromthe sand whenever desired. The ends of these inner frames are preferablymade to interlock, as shown, so as to cause the ends to move togetherwhen the frame is being adjusted above the top of that portion of theflask to which it is attached. The lower portion of the flask isprovided upon its opposite outer sides with suitable guiding-rods, I,which pass up through the match-plate J, and thus guide, center, andhold itin position. The rods I have their lower ends passed through theears 9, secured to opposite sides of the drag, and are then fastened inplace by means of the set-screws t. The upper portion of the flask isalso provided with guides L, which catch against the inner edges ofthese guiding-rods, for the purpose of holding the two parts alwaysaccurately in line with each other. The drag is placed upon any suitableflat surface, and the frame D is adjusted in position, so as to projectabove the top of the drag, according to the quantity of sand the dragrequires for the castings that are to be made. For convenience, the flatsurface on which the drag is placed may be under or in a screw,hydraulic, or any other kind of a press now in use. The frame D is alsosimilarly adjusted in the cope. The drag is first filled with sand, andthe match-plate is placed in position, and then the cope is filled withsand, and the flasks are then pressed together in a suitable press untilthe adjustable frames are forced back even with the tops of the portionsof the flask: The

cope is then lifted off, the pattern drawn, and the cope is then placedback in position. By releasing the latches which hold theends of theflask together the two portions of the flask and the adjustable framesexpand so as to re lease themselves from the sand, and the flask is thenlifted off without endangering the mold. All of this is done without thedrag being moved. The pressure being applied in the press to both endsalike, the pressure is equal on both sides of the match-plate, and

thus the plate is prevented from springing and causing unequal castings.

Each part of the flask being made from a single piece of wroughtiron orsteel, is not liable to get out of order, is light, strong, durable, andthe use of all hinges is done away with.

By making the two parts of the flask in the Tmanner shown a mold can bemade complete in one pressing. By this construction the quantity of sandin the mold is regulated, and thus the sand is prevented from being tooclosely packed and thus spoiling the mold.

Having thus described my invention, I claim 1. The combination of amolders flask which is formed from a single piece of elas tic materialwith an elastic adjustable frame which is applied thereto, and which isalso formed from a single piece of elastic material,

so that it will conform to the movements of the flask, substantially asspecified.

2. The combination of the flask formed from a single piece of elasticmaterial, and provided with suitable guides, with the adjustable frameprovided with guiding-rods which pass through the guides, substantiallyas shown.

3. The combination of the two parts of the flask, the frames D, placedin them, and provided with the ears or projections e, and the rods F,the guides G, on the two parts of the flask, and the nuts on the rods,substantially as specified.

In testimony whereof I affiX my signature in presence of two witnesses.

EDVARD FRIESS.

Witnesses:

CHARLES FERST, CARL J OHNSTON.

